The Usb to Vga Multi-Monitor Adapter works as an external graphics adapter, instantly allowing users to attach additional displays via Vga connection without the hassle of a lengthy setup or having to install additional hardware.With this adapter you can have a second monitor with an extended display, a mirrored display, a rotational display (Rotation Mode only available for Windows) or make it your primary monitor. Now enjoy true 1080p Hd resolution through any computer with a Usb 3.0 port.